Question

我需要一个人帮我解决这个问题，我想用Drive Road和Street替换Dr，Rd和St等角色，使用正则表达式，请问这怎么办？我已经尝试了很多方法，但我的结果是对的。例如，如果用户为变量vaddress提供此地址： 13，克林顿击败艾伦女王博士。结果应该是 13，克林顿街关闭艾伦路的女王驾驶。

这是我的代码示例：

    public void standardizeAddress(String vaddress){
        address = vaddress;//address is an instance variable
        String str1,str2;
       //Replace all instances of 'St,Rd,Dr' with 'Street,Road and Drive' Using

            String regex = "\\sSt\\s";
            Pattern pat = Pattern.compile(regex);
            Matcher match = pat.matcher(address);
            while(match.find())
             address = match.replaceAll(" Street ");
             System.out.println(address);
             str1 = address;

            regex = "\\sRd\\s";
            pat = Pattern.compile(regex);
            match = pat.matcher(str1);
            while(match.find())
            str1 = match.replaceAll(" Road ");
            System.out.println(str1);
            str2 = str1;

            regex = "\\sDr\\s";
            pat = Pattern.compile(regex);
            match = pat.matcher(str2);
            while(match.find())
            str2 = match.replaceAll(" Drive ");
            System.out.println(str2);    
        }

提前谢谢

Answer 1

这应该有效：

String str = "Dr abc Rd def St ghi";
str = str.replaceAll("(\\s+|^)Dr(\\s+|$)", "$1Drive$2");
str = str.replaceAll("(\\s+|^)Rd(\\s+|$)", "$1Road$2");
str = str.replaceAll("(\\s+|^)St(\\s+|$)", "$1Street$2");

System.out.println(str);

收益率：

驾驶abc Road def Street ghi

此代码应在您要替换的单词之前保留空格。

Answer 2

我认为如果您的情况非常简单并且您的方案很小（并且您不需要复杂的正则表达式），则可以使用String.replaceAll或String.replace。

Answer 3

如果您想使用Matcher，以下代码示例将帮助您：）

String address = "St number 9 and St number 99 and st number 999";       
String regex = "\\bSt\\b";
Pattern pat = Pattern.compile(regex);
Matcher match = pat.matcher(address);
address = match.replaceAll("Street");
System.out.println(address);

输出结果：Street number 9 and Street number 99 and st number 999

Answer 4

只是为了展示Pattern和Matcher的用法。我认为几个replaceAll的简单答案最具可读性。

    Map<String, String> replacements = new LinkedHashMap<>(); // Keep in order
    replacements.put("Dr", "Drive");
    replacements.put("Rd", "Road");
    replacements.put("St", "Street");

    StringBuilder regex = new StringBuilder();
    for (String abbrev : replacements.keySet()) {
        regex.append(regex.length() == 0? "\\b(" : "|");
        regex.append(Pattern.quote(abbrev));
    }
    regex.append(")\\b");
    Pattern abbrevPattern = Pattern.compile(regex.toString());
    Matcher m = abbrevPattern.matcher(vaddress);

    StringBuffer result = new StringBuffer();
    while (m.find()) {
        String outwritten = replacements.get(m.group(1));
        m.appendReplacement(result, outwritten);
    }
    m.appendTail(result);
    return result.toString();

我自己的正则表达式

4 个答案: